This is true because electricity can be conducted throe metal not menials like plastic and rubber hope it helps
They replace the lost ions by active uptake through active transport
of ions from the surrounding waters. This is exhibited in freshwater fishes that
actively take in these ions through the gills. Most of the ions involved in osmoregulation in freshwater are those of Na+ and Cl-.
I think the answer is 1, change ammonia into nitrates.
Answer:
d is the correct answer of your question
Well a theory is when a person comes up with something that they believe is to be true, and they work on projects and other things to show their thinking. theories won't always bee correct which helps us humans grow and come up with new ones